| isaac vs Hwoarang | 18–9 | 66.67% |
| isaac vs King | 8–17 | 32.00% |
| isaac vs Jin | 8–16 | 33.33% |
| isaac vs Eddy | 5–18 | 21.74% |
| isaac vs Kazuya | 12–9 | 57.14% |
| isaac vs Reina | 9–12 | 42.86% |
| isaac vs Lili | 8–11 | 42.11% |
| isaac vs Lars | 8–11 | 42.11% |
| isaac vs Steve | 6–10 | 37.50% |
| isaac vs Victor | 8–8 | 50.00% |
| isaac vs Jack-8 | 7–6 | 53.85% |
| isaac vs Dragunov | 7–6 | 53.85% |
| isaac vs Azucena | 5–8 | 38.46% |
| isaac vs Paul | 4–7 | 36.36% |
| isaac vs Law | 4–7 | 36.36% |
| isaac vs Asuka | 4–7 | 36.36% |
| isaac vs Jun | 6–5 | 54.55% |
| isaac vs Yoshimitsu | 5–5 | 50.00% |
| isaac vs Xiaoyu | 4–5 | 44.44% |
| isaac vs Bryan | 3–6 | 33.33% |
| isaac vs Lee | 3–6 | 33.33% |
| isaac vs Leroy | 4–3 | 57.14% |
| isaac vs Lidia | 3–3 | 50.00% |
| isaac vs Feng | 4–1 | 80.00% |
| isaac vs Alisa | 1–4 | 20.00% |
| isaac vs Shaheen | 1–4 | 20.00% |
| isaac vs Kuma | 0–4 | 0.00% |
| isaac vs Leo | 2–1 | 66.67% |
| isaac vs Raven | 2–0 | 100.00% |
| isaac vs Claudio | 0–1 | 0.00% |
| isaac vs Nina | 0–1 | 0.00% |
Limitations
This data is often requested to give insight into which characters you have more trouble with than others, but it is not particularly helpful for that. The main issue is that it is heavily skewed by how strong the opponents you play are.
For example, this data suggests my worst matchup is clearly vs Reina, but that's just because most of those games are vs Yagami.
There is a way to account for this being worked on. The central idea is to assign each matchup a rating vs you which adjusts based on the result, much like the regular rating but also based on the rating of each player. With this, it would give a better summary of how well you perform vs each character.
In the meantime, this page is here to present the data as requested.